| 加压酸浸法提取粉煤灰中的Al2O3和Fe2O3 |
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| 引用本文： | 吴成友,余红发,郑利娜,李颖,董金美,文静. 加压酸浸法提取粉煤灰中的Al2O3和Fe2O3[J]. 化工环保, 2012, 32(2): 173-176 |
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| 作者姓名： | 吴成友 余红发 郑利娜 李颖 董金美 文静 |
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| 作者单位： | 1. 中国科学院青海盐湖研究所,青海西宁810008;中国科学院研究生院,北京100049
2. 中国科学院青海盐湖研究所,青海西宁810008;南京航空航天大学土木工程系,江苏南京210016 |
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| 摘 要： | 采用加压酸浸法提取粉煤灰中的A12O3和Fe2O3.实验研究了粉煤灰粒径、硫酸质量分数、反应时间、反应温度对粉煤灰中Al2O3和Fe2O3浸取率的影响,并通过SEM对粉煤灰酸浸前后的形貌进行了分析.实验结果表明,当粉煤灰粒径为75μm、硫酸质量分数为50％、反应温度为180℃、反应时间为4h时,粉煤灰中的Al2O3浸取率可达82.4％,Fe2O3浸取率为76.1％,经酸浸后粉煤灰的剩余率为72.4％.
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| 关 键 词： | 粉煤灰 加压酸浸法 三氧化二铁 氧化铝 综合利用 |
Acid Extraction of Al2O3 and Fe2O3 from Fly Ash under Pressure |
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| Wu Chengyou , Yu Hongfa , Zheng Lina , Li Ying , Dong Jinmei , Wen Jing. Acid Extraction of Al2O3 and Fe2O3 from Fly Ash under Pressure[J]. Environmental Protection of Chemical Industry, 2012, 32(2): 173-176 |
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| Authors: | Wu Chengyou Yu Hongfa Zheng Lina Li Ying Dong Jinmei Wen Jing |
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| Affiliation: | 1,3(1.Qinghai Institute of Salt Lake,ChineseAcademic of Sciences,Xining Qinghai 810008,China;2.Department of Civil Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing Jiangsu 210016,China;3.Graduate School of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Al2O3 and Fe2O3 were extracted from fly ash by acid under pressure.The factors affecting the extraction rates of Al2O3 and Fe2O3 were studied and the morphologies of the pre-and post-extracted fly ash were analyzed by SEM.The experimental results show that when the fly ash size is 75 μm,the sulfuric acid mass fraction is 50%,the reaction temperature is 180 ℃ and the reaction time is 4 h,the extraction rates of Al2O3and Fe2O3can reach 82.4% and 76.1% respectively,and the mass of the post-extracted fly ash is only 72.4% of that of the pre-extracted fly ash. |
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| Keywords: | fly ash acid extraction under pressure ferric oxide aluminium oxide comprehensive utilization |
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